Improvement in automatic oven-shelves



D. G. LITTLEFIELD. Automatic Oven-Shelf.

Patented Dec. 9, I879@ jizyefizaz Q 6. [/TTLEF/ELD,

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N.FETERS, Pli OTO-L'THOGRAPNER, WASHINGTON. D C

UN TED STATES PATENT OFFICE.

DENNIS G. LITTLEFIELD,

OF ALBANY, NEW YORK.

IMPROVEMENT IN AUTOMATIC OVEN-SHELVES.

Specification forming part of Letters PatentNo. 222,357, dated December 9, 1879; application filed f June 25, 1879.

To all whom it may concern:

Be it known that I, DENNIS G. LITTLE- Oven-Shelves, of which the following is a full I and exact description.

My invention consists in certain modifica- V tions of well-known devices for automatically raising stove-oven shelves, hereinafter described, and specifically pointed out in the claim. .In the drawings, Figure 1 is a horizontal section of a portion of the oven-door, showing it open and the shelf extended; Fig. 2, a vertical section of the same on the line X X;

Fig. 3, a section showing the door closed and t the shelf raised to an upright position; and Fig. 4 is a bottom view of the shelf, havingits pouter corner, next to the oven-door, cut away or rounded off.

.As shown in the drawings, A is the bottom oven-plate; B,-thefrontoven-plate; C,the back oven-plate; D, the side plate of the stove; E, the oven-door, hinged in the usual manner to y the side plate, D. F is the shelf, which is provided with pintles f and f, upon which it Q turns, and which permit it, when in a horizontal position, to extend beyond the side plate, I), and on a level with the bottom oven-plate,

A. The pintle f enters an aperture formed for it in the back o\'en-plate,-O, and the pintle f lies between a stop upon the bottom oyen'plate,A, and the sideplate,D. A point or projection, f, on the pi'ntle f occupies the space left for the purpose between the stop a and front oven-plate, B, whichtholds the shelf from being pushed endwisea By this arrangement of the pintles and it their bearings the shelf is rendered portable,

andcan be taken out andreplaced for repairs, or for other purposes, without difficulty; or

if by accident the shelf is destroyed, there is left no deformity of the oven plates or door, )as is the case where the shelf is raised by a door made specially for that purpose, or Where complex machinery is made use of for that purpose; besides, w'iththis arrangement the shelf on being worn out can be replaced by one from the factory.

ing cut away or rounded, so that the door will not strike it to interfere with the actionof the angle 6 of the door-panel and the proje'ction'f upon the shelf.

When the shelf is in an upright position,

as shown in Figf 3, it rests in the sunken panel of the door with its center of gravity falling outside of its pivoted bearings, so that when the door is opened the shelf will follow it until it finds a horizontal position, asshown in Fig. 1. 5

Oven-shelves to be automaticallyraised to a perpendicular position by closing the ovendoor have heretofore been made in various ways. Some have used complicated machinery; others a cam or projection upon thedoor, which projected into the oven when the door was closed.

The first-mentioned method is objectionable by reason of its cost and the liability of the parts to soon wear out and become useless, while the last-mentioned method is objectionable for that such cam or projection, ezitendin g into the oven when the door is closed, 00- cupies a portion of the oven-space. a deformity to the door when open, and is in the way when the door is to be lined withtinplate or sheet iron. It is also in the waywhen polishing the edge of the door, all of which objections are obviated by my invention.

What I claim as my invention 1s The combination, in an oven-door haringa sunken panel, of a bearing or angle, 6, lying within the plane of contact between'saiddoor;

when closed and the side plate of the stove, and a shelf having its corner cut away or rounded, and provided with a projection, f substantially as and for the purposes above set forth.

DENNIS e. LITTLEFIELD.

Said projection is adaptedto. en

It is also 

